Replacing the exchange transfer box
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NOTE:
TECHNICAL INFORMATION
Drain transmission oil from the faulty transfer box. Warranty case: Leave transmission oil in the transfer box for a potentially necessary analysis. Once the arranged storage time has expired, drain and dispose.
Drain transmission oil from the faulty transfer box. Warranty case: Leave transmission oil in the transfer box for a potentially necessary analysis. Once the arranged storage time has expired, drain and dispose.
Preliminary work
- Disconnect all battery GROUND LEADS .
- Remove rear UNDERBODY PROTECTION .
- Remove the transmission side UNDERBODY PLANKING
- Remove the tunnel connecting SUPPORT .
- If installed: remove the right and left TORSION STRUT where required.
- Remove complete EXHAUST SYSTEM .
- Remove the HEAT SHIELDS .
- Remove transmission CROSS-MEMBER .
- Remove the RETAINING PLATES
- Partially loosen the PROP SHAFT
- Remove transmission bearing RUBBER MOUNT (all-wheel drive vehicle).
- Remove the TRANSFER BOX (ATC 13-1).
CAUTION:
Materials harmful to health.
Contact with fluids harmful to health!
Contact with fluids harmful to health!
- Note and follow safety instructions on containers.
- Conduct all work in appropriate personal protective equipment only.
NOTE:
RISK OF DAMAGE
Damage to the transmission.
Damage to the transmission due to unapproved transmission oil.
Damage to the transmission.
Damage to the transmission due to unapproved transmission oil.
- Use only the approved TRANSMISSION OIL .
- Check the transmission OIL LEVEL after completing the repair.
NOTE:
TECHNICAL INFORMATION
Replacement transmissions come filled with oil
Replacement transmissions come filled with oil
NOTE:
TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
NOTE:
TECHNICAL INFORMATION
Vehicle programing/coding must be performed after installation.
For additional information see: 61 00... PROGRAMING/ENCODING control unit(s)
Vehicle programing/coding must be performed after installation.
For additional information see: 61 00... PROGRAMING/ENCODING control unit(s)
Install the transfer box (ATC 13-1)
- Apply a thin layer of grease to the gearing (1) in the transfer box (VTG) and the gearing (2) on the automatic transmission.
CONSUMABLE - BALL BEARING GREASE DESCRIPTION
| Ball bearing grease | 100 g, Tube | 81229407174 |
- Replace the O-ring (1) before installing the front prop shaft in the transfer box (VTG).
Parts: O-ring
- Apply a thin coat of grease to the gearing of the output flange in the transfer box (VTG).
CONSUMABLE - BALL BEARING GREASE DESCRIPTION
| Ball bearing grease | 100 g, Tube | 81229407174 |
- Position the transfer box (VTG) with the help of a support person.
- Position the front prop shaft (1) on the output flange (3) of the transfer box (VTG).
- Align the front prop shaft (1) with markings (2) and (4).
- Install the transfer box (VTG) and at the same time slide the front prop shaft (1) into the output flange (3) of the transfer box (VTG).
- Remove any leaked grease on the prop shaft.
NOTE:
TECHNICAL INFORMATION
When assembling, it is essential to observe screwing sequences and tightening torques.
Failure to comply with the regulations can lead to leaks and damage.
When assembling, it is essential to observe screwing sequences and tightening torques.
Failure to comply with the regulations can lead to leaks and damage.
- Tighten screws in the order (1) to (5).
TIGHTENING TORQUES SPECIFICATION
| Transfer box to automatic transmission | ||
|---|---|---|
| M10 | Tightening torque | 43 Nm |
- Connect the connector (1) on the VTG control unit (longitudinal torque distribution) (2).
- Install the ground strap (2).
- Tighten down screw (1).
TIGHTENING TORQUES SPECIFICATION
| Ground strap to transmission or body | ||
|---|---|---|
| M8 | Tightening torque | 19 Nm |
Change transfer box oil (ATC 13-1)
- Open the oil filler plug (1).
NOTE:
TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
- Extract the transmission oil from the transfer box (VTG) using special tool 0 493 337 (00 2 080) and special tool 2 457 963.
- Top up transmission oil up to the lower edge of the opening for the oil filler plug using special tool 0 493 337 (00 2 080).
TECHNICAL DATA - TRANSFER BOX SPECIFICATION
| Filling capacity of transfer box | |
|---|---|
| Transfer-box oil | Min.0.7L |
- Replace the oil filler plug (1).
Parts: Oil filler plug
- Tighten the oil filler plug (1).
TIGHTENING TORQUES SPECIFICATION
| Oil filler and oil drain plugs | ||
|---|---|---|
| M22 | Tightening torque | 60 Nm |
- Remount covers and protective caps.
- Remove transportation retainer of the transmission input shaft.
- Remount the vent hose from the transfer box.
- Make note of transmission identification (see BMW Group parts sales and nameplate).
ENCODE/PROGRAM control unit(s)
Prerequisite
The control unit was replaced.
NOTE:
TECHNICAL INFORMATION
Use the most recent software version to prevent faults during programing/coding.
The battery voltage must not fall below 13.0 V during programing.
Use only chargers for a low volt-vehicle electrical system that are recommended by BMW.
Use the most recent software version to prevent faults during programing/coding.
The battery voltage must not fall below 13.0 V during programing.
Use only chargers for a low volt-vehicle electrical system that are recommended by BMW.
NOTE:
TECHNICAL INFORMATION
No high-voltage switch off is required in electric vehicles or hybrid vehicles for programing/coding.
The high-voltage system will be automatically switched off by the programing system.
Exception:
BMW I01: Note Product and Measures Management Aftersales measure 55176388.
No high-voltage switch off is required in electric vehicles or hybrid vehicles for programing/coding.
The high-voltage system will be automatically switched off by the programing system.
Exception:
BMW I01: Note Product and Measures Management Aftersales measure 55176388.
- Connect the battery charger to the vehicle (activity not included in the flat rate unit).
- Connect the programing system with the vehicle.
- Determine the action plan.
- Accept and fully process the action plan.
- Depending on the reworking list, connect the workshop system to the vehicle if necessary.
- Carry out vehicle test.
- Delete the fault memory.
- Note the information on programing in the workshop system and the relevant information in the user documentation.
- Wait until programing/coding has been completed.
- Disconnect the programing system from the vehicle.
- Disconnect the battery charger from the vehicle.
Follow-up work
- Install the TRANSFER BOX (ATC 13-1).
- Install the transmission bearing RUBBER MOUNT (all-wheel drive).
- Fasten the (partially removed) PROP SHAFT
- Install transmission CROSS MEMBER .
- Reconnect all battery GROUND LEADS .
- Check/top up the transfer box OIL (active torque control 13-1).
- Install the RETAINING PLATES .
- Install the HEAT SHIELDS .
- Install the complete EXHAUST SYSTEM .
- If installed: install the right and left TORSION STRUT where required.
- Install the tunnel connecting SUPPORTS .
- Install the transmission side UNDERBODY PLANKING .
- Install rear UNDERBODY PROTECTION .
- Fasten the (partially removed) PROP SHAFT